All categories

3 years ago

Solve the sytem: y = −2x + 5 2y + 4x = 10

Mathematics

1 answer:

Karo-lina-s [1.5K]3 years ago

4 0

Answer: there are infinite solutions

Step-by-step explanation:

You might be interested in

A researcher wants to know how dog owners in the United States feel about establishing a law requiring individuals who own pit b

Dvinal [7]

There is evidence of non-response bias in the survey results because only a fraction of the people that were mailed responded.

<h3>What is a survey?</h3>

A survey is a type of research which seeks to obtain information from a specific group of people called respondents. The research is normally in form of a questionnaire the reflects the honest opinion of the respondent.

From the result of the survey, it is possible to conclude that there is evidence of non-response bias in the survey results because only a fraction of the people that were mailed responded.

Learn more about survey: brainly.com/question/13532910

6 0

3 years ago

Find the value of the expression below when x = 27, y = - 4 , and z = 64 . 2 * root(3, x) - 5sqrt(x) + y ^ 2 answer

Anna71 [15]

Answer:

Step-by-step explanation:

x = 27, y = - 4, z = 64

<u>Expression:</u>

2∛x - 5√z + y² =
2∛27 - 5√64 + (-4)² =
2(3) - 5(8) + 16 =
6 - 40 + 16 =
-18

3 0

3 years ago

The perimeter of a pentagon is the sum of the lengths of its sides. In a regular pentagon, all sides have the same length.

Oksanka [162]

Since a pentagon has 5 sides, you would divide the perimeter by the number of sides.

641.5/5 = 128.3cm

Therefore, the length of one side of the pentagon is 128.3cm.

7 0

3 years ago

An um contains 1 red marble, 7 white marbles and 2 blue marbles. A player randomly

BaLLatris [955]

Answer:

A loss of 1.8$

Step-by-step explanation:

In the bag in this problem, we have:

r = 1 (number of red marbles)

w = 7 (number of white marbles)

b = 2 (number of blue marbles)

n = r + w + b = 1 + 7 + 2 = 10 (number of total marbles)

So, the probabilities of choosing a red, a white or a blue marble are:

$p(r) = \frac{r}{n}=\frac{1}{10}=0.1$ (probability of choosing a red marble)

$p(w)=\frac{w}{n}=\frac{7}{10}=0.7$ (probability of choosing a white marble)

$p(b) = \frac{b}{n}=\frac{2}{10}=0.2$ (probability of choosing a blue marble)

The winning associated to each probability are:

+$5 if the marble is red

-$3 if the marble is white

-$1 if the marble is blue

So the expected winning can be calculated as follows:

$E(X)=p(r) \cdot (+\$5)+p(w) \cdot (-\$3) +p(b)\cdot (-\$1)=\\=(0.1)(+5)+(0.7)(-3)+(0.2)(-1)=-\$1.8$

So, he can expect a loss of 1.8$.

4 0

3 years ago

The sum of three consecutive multiples of three are 54 more than twice the smallest number. What are the three integers?

Misha Larkins [42]

Answer:

45, 48, and 51.

Step-by-step explanation:

The numbers are 3x, 3x+3, and 3x+6. Write the equation: 9x+9=6x+54. Solve: x=15. So the numbers are 45, 48, and 51.

Check: 45+48+51 is 144. 45*2+54=144. 144=144 Correct!

6 0

4 years ago